package com.cy.pj.goods.service;

import com.cy.pj.goods.dao.GoodsDao;
import com.cy.pj.goods.pojo.Goods;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * 业务逻辑处理
 * 1)通过数据层对象访问业务数据
 * 2)通过日志对象记录日志
 * 3)控制权限
 * 4)缓存
 * ...
 */
@Service
public class GoodsServiceImpl implements GoodsService {
    private static final Logger log  = LoggerFactory.getLogger(GoodsServiceImpl.class);

    @Autowired
    private GoodsDao goodsDao;

    @Override
    public List<Goods> findGoods() {
        long t1 = System.currentTimeMillis();
        log.info("start {}", t1);
        List<Goods> list = goodsDao.findAll();
        long t2 = System.currentTimeMillis();
        log.info("end {}", t2);
        log.info("execute time {}", t2 -t1);
        return list;
    }

    @Override
    public int deleteById(Long id) {
        if(id == null || id < 1)
            throw new IllegalArgumentException("传入的ID值不合法");
        return goodsDao.deleteById(id);
    }
}
